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2 Sheets- Sheet (No Model.)

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A BOOK PROTECTOR. N@ 377,968.

Patented Feb..- 14, 1888.7r

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Wj TVESSE'S 2 Sheets-Sheet 2.

(No ModeL) PL F. VAN HEREN.

BOOK PROTECTOR.

No. 377,968. Patented Peb. 14, 18188.

.the gummed flap G upon it the two flaps will UNITED: STATES;

PATENTy OFFICE.

PHILIP'F. VAN nvnnnn, or BROOKLYN, Nnw YORK.

BooK-PROTECTOR.'

SPECIFICATION formingl part of Letters Patent No. 377.9618. dated February 14, 1888.

Application filed October 2S, 1886.

To all whom it may concern:

Be it known that I, PHILIP F. VAN EVEBEN, a citizen of the United States, residing 'at Brooklyn, in the county of Kings and State of New York, have invented newand useful Improvements in Book-Protectors, of which the following is a specification. r

Thisy invention relates to book-protectors or book-cover protectors of the character described in United States Letters Patent No. 102,733, issued to me May 3, 1870; and it consists in several novel features, which are here' inafter fully described and set forth, reference being had to the accompanying drawings, in whichy Figure 1 is a perspective View of abook having the improved protector ap plied thereto. Fig. 2 is a viewbf the inner surfacesv of the four corner pieces or sections before they are applied to a book. Fig. 3 is a view ofthe inner surface of the improved protector as it would appear when the four sections are brought together, the book being left out of the view. Fig. 4 is a longitudinal section taken on the line a: of Fig. 3, the book to which the protector is applied being shown. Fig. 5 is an inner face view of one of the sections before its flaps are folded.

Similar letters indicate corresponding parts.

rlhe letter A designates the protector-,which is composed of sections 1 2 3 4, one for each corner of the book or book-cover to which it is to be applied. Each section is provided with daps B C,which meet at one of the corners of the blank, and are folded down upon each other and made to adhere to eachother by means of paste or suitable adhesive material, for which purpose one of thc'tlaps--in this example the flap C--is gummed, as at D, so that on folding down the ap B and then folding be made to adhere, and a pocket, E, will thereby be formed at one corner of the section for the reception of a corner of the book-cover. In this manner the flaps B C of all the sections are secured to each other. The aps B C are formed with curved edges, so made and arranged as to overlap each other about midway between the folding lines F, where the two flaps are folded on the body of the sections, and the gummed edge D is so arranged that Serial No. 217,433. v(No model.)

the aps are cemented to each other on a line at about equal distances from the foldinglines F,whereby`the pocket is made more symmetrical than when the gummed line is near one of the folding lines, as in the protector shown in said patent, and is also more readily opened for the reception of the corner of the bookcover, by reason of the central position of the cemented joint, and the cemented joint is stronger than when it is arranged along the folding line, as in said patent. Furthermore, this location of the cemented joint enables me to reduce the size of the flaps, and thus eX- pose the gummed edges Gr of the sections 2 and 4, and make them more readily accessible and more easy to manipulate when the sections of the protector are being cemented to each other on a book-cover. It also reduces 'the cost of the protector, as less paper is required in producing it.

For the purpose of securing and cemehting the sections to each other when placed on a book, they are provided with gummed edges,

as follows: Sections 1 and 2 are each provided with a gummed edge, H, on their under surfaces at their left-hand ends, as shown on section 1 in the drawings, Fig. 2, and as indicatedV by a dotted line on section 2 in the same figure. Section 2 has also a gummed edge, G, along its lower edge on its upper surface. Section 3 has a gummed edge, I, at its right'- haud end on its upper surface. Section 4 has on its upper surface a gummed edge, G, along its lower edge, and a gummed edge, I, at its right-hand end.

The several sections are arranged on a booky cover in the manner and order illustrated in Figs, 2 and 3, the pocket E of section l being slipped upon the lower right-hand corner of the book-cover, and then section 2 is placed upon the upper right-hand corner of the book,

vand so that its gummed edge G will overlap Ico mented to each-other in. thexorder mentioned bynmeans of their several gumlned edges G H I,which, for convenience, are gummed beforehand and dried, so that by moistening the gummed edges they 'can be cemented tothe adjoining sections, as above explained.

The object of providing the gummed edges H H on the outer surface of the left-hand ends of sections 1 and 2 is to prevent those ends from curling and rolling up from contact with the back of the book, as they are likely to do when those ends are left free.

In practice it is not always necessary in the case of small books that the gummed edge H be provided ou both the sections 1 and 2, as the curling up will be in a measure prevented by means of the gummed edge H of one of them.

The book-protector here described is made of different sizes,as may be required for books of different sizes; but the sections are adjust# able on each other, so that the same protector or sections are applicable to two or more sizes o1 books.

What I claim as new, and desire to secure by Letters Patent, is-

A bookcover consisting of four separate sections, 1, 2, 3, and 4, each having folding aps B C meeting at one of the corners of each seotion,and formed with curved edges adapted to overlap midway between the folding lines, the sections 1 and 2 being each provided on the outside at one end with gummed surfaces H, the section 2 being gummed along one side edge of its inner side at G, the section 3 along one end edge of its inner side 'at I, and the section 4 along one side edge and one end edge of its inner side at G I, substantially as shown and described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

PHILIIJ F. VAN EVEREN. [1.. s]

Witnesses:

J. VAN SANTvooRD, WILLIAM MILLER. 

